Quantum interactions between a laser interferometer and gravitational waves
Quantum interactions between a laser interferometer and gravitational waves
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DOI：
10.1103/physrevd.98.124006
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发表时间：
2018-08
影响因子：
5
通讯作者：
B. Pang;Yanbei Chen
中科院分区：
文献类型：
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作者：
B. Pang;Yanbei Chen
LIGO对引力波的探测标志着广义相对论对量子物质的可测量效应迈出了第一步。在目前的操作中，激光干涉仪引力波探测器在高频下已经受到量子限制，计划中的升级旨在在更宽的带宽上将本底噪声降低到量子水平。这就引出了一个有趣的想法，即引力波探测器或者更一般地说，一个光学机械系统，除了从高能天体物理事件中探测引力波之外，还可以揭示什么样的引力，比如它的量子性质与经典性质。在本文中，我们开发了一个量子处理引力波和它们与探测器的相互作用。我们表明，治疗恢复已知的运动方程在经典的重力极限，我们应用我们的配方来研究系统动力学，特别注重重力量子化的影响。我们的框架也可以扩展到研究引力的替代理论，以及它们的特征在量子光学机械系统中表现出来的方式。
LIGO’s detection of gravitational waves marks a first step in measurable effects of general relativity on quantum matter. In their current operation, laser interferometer gravitational-wave detectors are already quantum limited at high frequencies, and planned upgrades aim to decrease the noise floor to the quantum level over a wider bandwidth. This raises the interesting idea of what a gravitational-wave detector—or, more generally, an optomechanical system—may reveal about gravity beyond detecting gravitational waves from highly energetic astrophysical events, such as its quantum versus classical nature. In this paper we develop a quantum treatment of gravitational waves and their interactions with the detector. We show that the treatment recovers known equations of motion in the classical limit for gravity, and we apply our formulation to study the system dynamics, with a particular focus on the implications of gravity quantization. Our framework can also be extended to study alternate theories of gravity and the ways in which their features manifest themselves in a quantum optomechanical system.